EP 0776691 A1 19970604 - Process for introducing a solid catalyst into a gas-phase olefin polymerization reactor

Title (en)

Process for introducing a solid catalyst into a gas-phase olefin polymerization reactor

Title (de)

Verfahren zum Beschicken eines Reaktors zur Olefinpolymerisation in der Gasphase mit einem festen Katalysator

Title (fr)

Procédé pour introduire un catalyseur solide dans un réacteur de polymérisation d'oléfines en phase gazeuse

Publication

EP 0776691 A1 19970604 (EN)

Application

EP 96308479 A 19961122

Priority

FR 9514720 A 19951129

Abstract (en)

The present invention relates to a process for introducing a solid catalyst into a gas-phase olefin polymerization reactor (10). It comprises in particular storing the catalyst in the form of a dry powder in a hopper (1), withdrawing from the hopper (1) a measured amount of the said catalyst, introducing the said amount of the catalyst and a liquid hydrocarbon into a mixing chamber (7), mixing the said catalyst with the said liquid hydrocarbon so as to form in the said chamber (7) a suspension of the entrained catalyst with the said liquid hydrocarbon, and introducing the said suspension into the said reactor (10). In a preferred form, the liquid hydrocarbon is continuously introduced into the chamber (7) and forms a continuous stream to which is added the measured amount of the catalyst and which flows into the reactor (10). <IMAGE>

IPC 1-7

B01J 8/00; B01J 3/02; C08F 10/00; C08F 2/34

IPC 8 full level

B01J 8/00 (2006.01); B01J 8/24 (2006.01); C08F 2/34 (2006.01); C08F 10/00 (2006.01); C08F 210/16 (2006.01)

CPC (source: EP US)

B01J 8/0035 (2013.01 - EP US); B01J 8/24 (2013.01 - EP US); C08F 10/00 (2013.01 - EP US); B01J 2208/00752 (2013.01 - EP US); C08F 210/16 (2013.01 - EP US); Y10S 502/523 (2013.01 - EP US); Y10S 526/901 (2013.01 - EP US)

C-Set (source: EP US)

Citation (applicant)

FR 2705252 A1 19941125 - BP CHEMICALS SNC [FR]
LU 79915 A1 19781207
EP 0129368 A1 19841227 - EXXON RESEARCH ENGINEERING CO [US]
US 5324800 A 19940628 - WELBORN JR HOWARD C [US], et al
EP 0206794 A1 19861230 - EXXON CHEMICAL PATENTS INC [US]
EP 0416815 A2 19910313 - DOW CHEMICAL CO [US]
EP 0420436 A1 19910403 - EXXON CHEMICAL PATENTS INC [US]
WO 9428032 A1 19941208 - BP CHEM INT LTD [GB], et al
FR 2706467 A1 19941223 - BP CHEMICALS SNC [FR]

Citation (search report)

[DA] LU 79915 A1 19781207
[A] EP 0495300 A1 19920722 - BP CHEM INT LTD [GB], et al
[A] US 4610574 A 19860909 - PETERS EDWIN F [US]
[A] US 5098667 A 19920324 - YOUNG RICHARD K [US], et al
[A] US 4200715 A 19800429 - LYNCH THOMAS J [US], et al
[DA] FR 2705252 A1 19941125 - BP CHEMICALS SNC [FR]
[DA] WO 9428032 A1 19941208 - BP CHEM INT LTD [GB], et al

Designated contracting state (EPC)

AT BE DE ES FI FR GB IT NL PT SE

DOCDB simple family (publication)

EP 0776691 A1 19970604; EP 0776691 B1 20010912; AT E205418 T1 20010915; DE 69615125 D1 20011018; DE 69615125 T2 20020620; FR 2741549 A1 19970530; FR 2741549 B1 19980102; MY 113820 A 20020531; NO 310876 B1 20010910; NO 965076 D0 19961128; NO 965076 L 19970530; US 5922818 A 19990713

DOCDB simple family (application)

EP 96308479 A 19961122; AT 96308479 T 19961122; DE 69615125 T 19961122; FR 9514720 A 19951129; MY PI19964994 A 19961128; NO 965076 A 19961128; US 75582596 A 19961126